Thank you for taking the time to report this bug and helping to make Ubuntu better. The issue you are reporting is an upstream one and it would be nice if somebody having it could send the bug to the developers of the software by following the instructions at https://wiki.ubuntu.com/Bugs/Upstream/GNOME. If you have done so, please tell us the number of the upstream bug (or the link), so we can add a bugwatch that will inform us about its status. Thanks in advance.

Daniel, yes the extensions that are part of GNOME Classic (and installed as part of gnome-shell-extensions) have the same problem.

Iain, I'm reopening the gnome-shell part of this bug since I believe this bug is actually in gnome-shell and not gnome-tweak-tool (see comment 2). My understanding is that you can drop the rls-aa-incoming tag if this issue is not a priority for the Desktop Team right now.

We appreciate that this bug may be old and you might not be interested in discussing it any more. But if you are then please upgrade to the latest Ubuntu version and re-test. If you then find the bug is still present in the newer Ubuntu version, please add a comment here telling us which new version it is in and change the bug status to Confirmed.